GATE DOOR LOCKING DEVICE

PROBLEM TO BE SOLVED: To provide a gate door locking device used in an expansible gate door, composed of a reception metal member and a hooking metal member, having a simple structure, and capable of preventing the hooking metal member from coming off from the reception metal member. SOLUTION: An engaging piece 42 is formed on the reception metal member 40. A receive piece 43 is formed at a lower end of the engaging piece 42. A cylinder lock 64 is provided on a locking metal member 60 so as to turn by about 180 degrees in the vertical direction. The cylinder lock 64 has pressing parts 68 formed in both end parts so as to position them above the engaging piece 42 and a vertical pressing piece 69 formed so as to position it on a side of the engaging piece 42. A hooking metal piece 57 engaging with the engaging piece 42 is formed on the hooking metal member 50, which is provided with a handle piece 58 formed by bending at substantially right angle from the hooking metal piece 57. COPYRIGHT: (C)2004,JPO&NCIPI